#!/bin/sh

# Slackware build script for gzdoom

# Written by B. Watson (yalhcru@gmail.com)

# Licensed under the WTFPL. See http://www.wtfpl.net/txt/copying/ for details.

# 20170610 bkw:
# - Renamed to gzdoom-legacy. Too much effort to keep testing old
#   gzdoom versions every time there's a new release, so the regular
#   gzdoom build will only support the newest version. If you're
#   wondering why I keep supporting old versions, it's because I have
#   old hardware. Doom is from the 1990s, it shouldn't need a $5000
#   gaming rig to play properly in 2017.

# 20170324 bkw:
# - Updated for 2.4.0.

# 20170207 bkw:
# - BUILD=2
# - Get rid of private fmodapi, now that the SBo fmodapi has been updated
#   to a new enough version. Re-add fmodapi to REQUIRES.
# - Fix download link so we always get the correct filename.

# 20170113 bkw:
# - Updated for 2.3.2. 1.9.1 and 1.8.09 still work, too.
# - Use newer version of fmodapi. Due to licensing confusion, the
#   fmodapi version on SBo hasn't been upgraded in forever. So this
#   build now uses its own dedicated fmodapi, which installs to
#   a private directory (won't conflict with system fmodapi, if present).

PRGNAM=gzdoom-legacy
SRCNAM=gzdoom
VERSION=${VERSION:-2.4.0}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}

if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i586 ;;
    arm*) ARCH=arm ;;
       *) ARCH=$( uname -m ) ;;
  esac
fi

CWD=$(pwd)
TMP=${TMP:-/tmp/SBo}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

if [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi

set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $SRCNAM-g$VERSION $SRCNAM-$VERSION
tar xvf $CWD/$SRCNAM-g$VERSION.tar.gz || \
  tar xvf $CWD/g$VERSION.tar.gz || \
  tar xvf $CWD/$SRCNAM-$VERSION.tar.gz || \
  tar xvf $CWD/$VERSION.tar.gz
cd $SRCNAM-g$VERSION || cd $SRCNAM-$VERSION
chown -R root:root .
find -L . \
 \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 -o -perm 511 \) \
 -exec chmod 755 {} \+ -o \
 \( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
 -exec chmod 644 {} \+

# fmodapi support tries to find its lib in the current dir, fix it:
sed -i \
  "s,setPluginPath(progdir),setPluginPath(\"/usr/lib$LIBDIRSUFFIX/$SRCNAM\")," \
  src/sound/fmodsound.cpp

# gzdoom in windowed mode wants to display its git tag and hash as part
# of the window title. For releases this shows up as "<unknown version> 0",
# which doesn't hurt anything but is ugly.
# This makes the window title appear as e.g. "GZDOOM 2.1.1 (Aug 3 2016)". The
# date is the build date.
patch -p1 < $CWD/window_title_version.diff

# Sometimes upstream forgets to bump the version number, so the window
# title will read 1.8.08 for version 1.8.09, eg.
sed -i "/#define *VERSIONSTR/s,\"[^\"]*\",\"$VERSION\"," src/version.h

# This isn't currently used, but was in the past, and will be again I'm sure.
[ -e $CWD/compilefix.$VERSION.diff ] && \
  patch -p1 < $CWD/compilefix.$VERSION.diff

mkdir -p build
cd build
  cmake \
    -DCMAKE_C_FLAGS_RELEASE:STRING="$SLKCFLAGS -DSHARE_DIR=\\\"/usr/share/games/doom\\\"" \
    -DCMAKE_CXX_FLAGS_RELEASE:STRING="$SLKCFLAGS -DSHARE_DIR=\\\"/usr/share/games/doom\\\"" \
    -DCMAKE_INSTALL_PREFIX=/usr \
    -DLIB_SUFFIX=${LIBDIRSUFFIX} \
    -DMAN_INSTALL_DIR=/usr/man \
	 -DFMOD_LIBRARY=/usr/lib${LIBDIRSUFFIX}/libfmodex${LIBDIRSUFFIX}.so \
    -DCMAKE_BUILD_TYPE=Release ..
  make VERBOSE=1
  mkdir -p $PKG/usr/games $PKG/usr/share/games/doom
  install -m0755 -s $SRCNAM $PKG/usr/games/$SRCNAM
  install -m0644 *.pk3 $PKG/usr/share/games/doom/

  # If fmodapi support was compiled in:
  if [ -e liboutput_sdl.so ]; then
    mkdir -p $PKG/usr/lib$LIBDIRSUFFIX/$SRCNAM
    install -m0755 -s liboutput_sdl.so $PKG/usr/lib$LIBDIRSUFFIX/$SRCNAM/liboutput_sdl.so
  fi
cd ..

# .desktop written for this SlackBuild
mkdir -p $PKG/usr/share/applications
cat $CWD/$SRCNAM.desktop > $PKG/usr/share/applications/$SRCNAM.desktop

# PNG converted from Windows icon
mkdir -p $PKG/usr/share/pixmaps
cat $CWD/$SRCNAM.png > $PKG/usr/share/pixmaps/$SRCNAM.png

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a docs/* $PKG/usr/doc/$PRGNAM-$VERSION
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild
cat $CWD/README_SBo.txt > $PKG/usr/doc/$PRGNAM-$VERSION/README_SBo.txt

# Fix DOS CRLF line endings. The stuff in licenses/ is already OK, for 2.3.2.
sed -i 's/\r//' $PKG/usr/doc/$PRGNAM-$VERSION/*.*

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc
cat $CWD/doinst.sh > $PKG/install/doinst.sh

cd $PKG
/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.${PKGTYPE:-tgz}
